PV is now being sold with a 25-year warranty - it'll still have at least 80% capacity after that time. As the article rightly points out, it often just makes m

PV is now being sold with a 25-year warranty - it'll still have at least 80% capacity after that time. As the article rightly points out, it often just makes more economic sense to replace them earlier due to improvements in panel technology. There isn't really a technical reason to replace them.